Custom NTC Temperature Sensor Manufacturer | Wholesale OEM Supplier
As a custom NTC temperature sensor manufacturer with over 5 years of focused experience in temperature sensing technology, Dongguan Evergreen Technology operates a 13,000 m² production facility certified to ISO 9001:2015 and ISO 14001:2015, and supplies wholesale OEM volumes to Fortune 500 partners across the United States, Europe, and beyond.
We design and produce high-sensitivity NTC sensors for accurate temperature measurement and control, with engineering support for custom resistance values, B-constants, and waterproof probe designs — backed by a quality system that spans raw material inspection through final performance testing.
[5+ Years Manufacturing Experience] [ISO 9001:2015 & ISO 14001:2015 Certified] [13,000m² Production Facility] [Trusted by Fortune 500 Partners]
| Core Principle | Negative Temperature Coefficient: Resistance decreases as temperature increases. |
| Product Overview | A highly sensitive sensor that responds rapidly to minute temperature changes. It is primarily used for precise temperature measurement and control. |
| Typical Applications | Digital thermometers, ear thermometers · Temperature control in home appliances (e.g., air conditioners, refrigerators, coffee makers) · Battery pack temperature monitoring · Automotive coolant/ambient air temperature sensing |
| Recommended Use | Recommended for applications requiring continuous and accurate temperature measurement, such as: Medical electronic devices · High-precision environmental monitoring · Thermal management systems in consumer electronics |
| Key Advantages | High sensitivity · Superior measurement accuracy · Cost-effective performance |
NTC Temperature Sensor Technical Specifications
Our NTC temperature sensor range covers a wide span of resistance values and tolerance grades to match different application requirements. Below are the typical specification ranges across our standard catalog. For exact specifications of a given part number, please refer to the individual product page or request a datasheet — values vary by model and are fully customizable.
| Parameter | Typical Range | Notes |
|---|
| R25 Resistance Value | 1KΩ – 100KΩ | Custom resistance values available on request |
| B Value (B25/50) | 3380K – 4500K | Custom B-constant available to match your control curve |
| Accuracy / Tolerance | ±0.5% to ±3% | Tighter tolerances (e.g. ±0.5%) available for precision applications — see EG-N039 series |
| Operating Temperature Range | -40°C to +125°C | Varies by encapsulation material; confirm per model |
| Response Time | ≤3s to ≤8s (in air) | Faster response available with smaller probe head designs |
| Waterproof / Probe Protection | Waterproof probe designs available |
|
| Lead / Cable Options | Bare wire, terminal, connector, custom cable length | Cable specification customizable per application |
* Specifications shown represent the typical range across our NTC product line. Individual models (e.g. EG-N039: R25=10KΩ, B25/50=3634K, ±0.5%, -40°C to +85°C, response ≤3s) may differ — please consult the relevant product page or contact our team for a full datasheet.
NTC vs. PTC vs. RTD: Which Temperature Sensor Is Right for You?
Choosing between NTC, PTC, and RTD sensors depends on your required accuracy, temperature range, and response speed. Here's a quick comparison to help guide your sourcing decision:
| Type | Resistance Behavior | Typical Accuracy | Best For |
|---|
| NTC Thermistor | Resistance decreases as temperature rises | High sensitivity, ±0.5%–3% | Fast, low-cost, high-sensitivity measurement in a moderate temperature range (consumer electronics, appliances, batteries) |
| PTC Thermistor | Resistance increases sharply past a threshold | Switch-type response rather than linear measurement | Overcurrent/overtemperature protection and self-regulating heating, rather than precision measurement |
| RTD (e.g. Pt100/Pt1000) | Resistance increases linearly and predictably with temperature | Very high long-term stability, typically ±0.1%–0.5% | Wide temperature range, long-term stability, and industrial-grade repeatability |
Need help deciding? See our Pt RTD Sensor and PTC Temperature Sensor pages, or contact our engineering team for a sensor selection recommendation based on your application.
OEM & Custom NTC Temperature Sensor Capabilities
As a professional custom NTC temperature sensor supplier, we offer flexible customization to support different product designs and system architectures:
Custom resistance value (R25) and B-constant to match your control curve
Custom probe shape, size, and encapsulation material
Custom cable length, lead type, and connector/terminal integration
Custom waterproof probe and high-temperature designs for harsh environments
Custom accuracy/tolerance grading for precision applications
From prototype sampling to stable wholesale-volume batch production, we support long-term OEM cooperation with full traceability from raw material to finished sensor.
MOQ, Sample Lead Time & Wholesale Pricing
We support both small-batch sampling for product development and wholesale-volume orders for production-stage sourcing.
Minimum Order Quantity (MOQ): MOQ varies by customization level — standard catalog items generally have lower MOQs than fully custom designs. Contact us with your target volume for a tailored quote.
Sample Lead Time:Sample lead time depends on customization scope; standard configurations are typically faster to sample than fully custom resistance/B-value/waterproof designs. Confirm exact timing with our team for your specific requirement.
Wholesale Pricing: Volume-based pricing available — for reference, standard precision models such as EG-N039 are priced from approximately US$0.85–0.89/piece at standard volumes, with further tiered discounts for wholesale orders.
Frequently Asked Questions
Q: Can I customize the resistance value and B-constant?
A: Yes. R25 resistance and B-value (B25/50) can be tailored to match your specific control curve and system requirements.
Q: Do you offer waterproof NTC sensors?
A: Yes, waterproof probe designs are available as a custom option. Please share your application's environmental exposure level so our team can recommend the appropriate probe construction.
Q: What's the difference between NTC and PTC sensors?
A: NTC sensors are used for precise, continuous temperature measurement, while PTC thermistors are primarily used for overcurrent/overtemperature protection and switching applications rather than linear measurement. See the comparison table above for details.
Q: What is your MOQ for wholesale orders?
A: MOQ depends on whether you're ordering a standard catalog configuration or a fully custom design. Contact our team with your target volume and specification for an accurate quote.
Q: Are your NTC sensors certified?
A: Our manufacturing facility is certified to ISO 9001:2015 (Quality Management) and ISO 14001:2015 (Environmental Management).
Get a Custom NTC Sensor Quote
Whether you need a standard NTC temperature sensor or a fully custom resistance/B-value/waterproof probe design, our engineering team is ready to support your project — from prototype sampling to wholesale-volume production.
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